半分|はんぶんhanbun[3]nakadaka (mid-high)

1. adverb, nounhalf
   エミーはナプキンを半分はんぶんに折おりたたんだ。↗

   Emmy folded the napkin in half.

• Synonym半ばなかばNeutralCovers the middle of a process or 'partly', as in 「月の半ば」「半ば諦める」; focuses on being midway rather than an exact half.
• SynonymハーフNeutralA loanword for half or a half of a game; also means a person of mixed heritage, a sense 「半分」 does not have.
• Synonym半はんNeutralMostly a prefix or suffix, as in 「半年」「三時半」; rarely stands alone. For saying 'half' in everyday speech, use 「半分」.
• Synonym半数はんすうNeutralHalf of a total number; used with counts of people or things, as in 「半数以上」.
• Synonym二分の一にぶんのいちNeutralThe mathematical one-half, i.e. 50%; used when an exact proportion matters rather than casual talk of half.
• Related半分だけNeutralAdds だけ to stress that only half is involved, as in 「半分だけ食べる」; carries a limiting tone that plain 「半分」 lacks.
• Antonym全部ぜんぶNeutralMeans all or everything — the opposite of 「半分」, which covers only half.
• Antonym全体ぜんたいNeutralThe whole viewed as one undivided entity; contrasts with 「半分」, which implies the whole has been split.

For 'half' by default use 「半分」. Use 「半ば」 for midway or partly, 「半数」 for half of a number of people or things, 「二分の一」 for the exact ratio, and 「半」 mainly in compounds. 「ハーフ」 adds the mixed-heritage sense; 「全部」 and 「全体」 are the opposites.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 全体ぜんたいを二ふたつに等分とうぶんしたもののうちの一ひとつ。二に分ぶんの一いち。
2. 意向いこうや状態じょうたいなどのなかば。ある程度ていど。
3. 名詞めいしのあとについて、そのような気持きもちや理由りゆうがなかばある、あるいはなかばずつあることを表あらわす。